pub fn write_allocation_bytes<'tcx, Prov: Provenance, Extra, Bytes: AllocBytes>( tcx: TyCtxt<'tcx>, alloc: &Allocation<Prov, Extra, Bytes>, w: &mut dyn Write, prefix: &str ) -> Result
prefix argument allows callers to add an arbitrary prefix before each line (even if there
is only one line). Note that your prefix should contain a trailing space as the lines are
printed directly after it.